Ask Julius!  He's on the list...(yo Orion, homie, you there?)

On Sun, Mar 24, 2013 at 8:43 AM, Stefan Blixt <stefan.blixt@gmail.com> wrote:
> Interesting! :) Do you know if they tried this out in some implementation
> that we could have a look at?
>
>
> On Sun, Mar 24, 2013 at 3:09 PM, Robert Poor <rdpoor@gmail.com> wrote:
>>
>> Julius might want to chime in, but as I recall, he and Phil Gosset
>> came up with a really nifty technique for MIDI pitch tracking suited
>> for guitars:
>>
>> As soon as you notice an attack, make a Wild Assed Guess as to the
>> pitch and emit a NoteOn event.  Then, as the transient passes and you
>> can actually start to detect the pitch, start emitting NoteBend events
>> to correct your original guess.
>>
>> Your ear can't detect the pitch at the attack, but it is very
>> sensitive to onset times, so this technique works pretty well.
>>
>> On Sun, Mar 24, 2013 at 6:55 AM, Stefan Blixt <stefan.blixt@gmail.com>
>> wrote:
>> > Re: latency - that's very true. OTOH, someone pointed out somewhere that
>> > latency has been around as long as bands have needed to perform on big
>> > stages in front of huge speaker stacks, due to the fact that the stacks
>> > are
>> > positioned some distance away from the musicians, and sound needs to
>> > travel
>> > a while before hitting the musicians ears. I'm not saying I'm used to
>> > performing on big stages, just that latency doesn't have to be a
>> > show-stopper, just a condition you need to work with. The problem then
>> > becomes to make the latency consistent, which has been a problem for me
>> > -
>> > some notes are detected later than others.
>> >
>> >
>> > On Sun, Mar 24, 2013 at 2:23 PM, Kassen <signal.automatique@gmail.com>
>> > wrote:
>> >>
>> >> On Sun, Mar 24, 2013 at 01:16:41PM +0100, Stefan Blixt wrote:
>> >> >    Kassen, perhaps you're thinking about the YouRock guitar? I've
>> >> > been
>> >> >    glancing at that one myself - looks like a clever piece of gear.
>> >>
>> >> Me too, but considering my collection I should really only get game
>> >> controllers I have actual plans for.
>> >>
>> >> >    They're actually getting better at polyphonic pitch detection -
>> >> > there
>> >> > are
>> >> >    polyphonic tuners available (the TC Electronic app for iPhone),
>> >> > and
>> >> > the
>> >> >    RockSmith console game (great fun!) detects chords - though how
>> >> > well
>> >> > it
>> >> >    does isn't apparent, maybe they're faking it ;) I do think there's
>> >> > a
>> >> > fair
>> >> >    amount of latency involved in both of those though.
>> >>
>> >> Frankly I think that is unavoidable. Pitch detection takes time and
>> >> the onset of guitar notes is really quite noisy on top of that. What
>> >> I'd do if I wanted to get clever would be to first send that a
>> >> transient has been detected and only once I were sure of the pitch
>> >> send the pitch, then using some synth controlled by this that would
>> >> also start with noisy attacks. That might be ok.
>> >>
>> >> I said it before but there really is no way around latency in pitch
>> >> detection as pitch is inherently a time-based phenomenon. If the plan
>> >> is to get new musical ideas that might not be a issue as you could run
>> >> analysis at your leisure. For rocking out live it's either accepting
>> >> the math or everyone's favourite strategy; cheat ;-)
>> >>
>> >> Yours,
>> >> Kas.
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>> >
>> >
>> > --
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>> >
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